Friday Harbor Airport Weather Forecast

    • 37
    • 45

    Rain

    • 38
    • 47

    Rain

    • 37
    • 45

    Rain Likely

    • 35
    • 44

    Slight Chance Rain

    • 36
    • 43

    Chance Rain/Snow

    • 38
    • 45

    Chance Rain

    • 38
    • 46

    Chance Rain

Today 23 Dec San Juan County

Partly sunny. A slight chance of rain in the morning. Highs in the mid to upper 40s. Southeast wind 10 to 15 Mph.

Tonight 23 Dec San Juan County

Mostly cloudy. A slight chance of rain late in the night. Lows in the mid 30s to lower 40s. East wind to 10 Mph becoming northeast after midnight.

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Friday Harbor Airport Temperature Statistics

December Temperature

Friday Harbor Airport (0 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    46.5 °F

  • Highest 15 December, 2025

    57 °F

Climate (2020–Present)

Friday Harbor Airport (0 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
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